It's possible to improve ergonomics with a standard keyboard by abandoning the notion that you must type with your hands locked in place by moving your fingers only. My hands are all over the keyboard when I type to avoid finger strain, and yes I can still touch type this way. Human fingers were optimized for gripping and are poorly adapted to move laterally to strike a key, so if you need to strike a key that's not within comfortable striking range, move your hand slightly.

It's one of those little ergonomic things, like "use both hands to avoid Emacs pinky", that vastly improve life.